ID   GLYA_SULIK              Reviewed;         433 AA.
AC   C4KHW7;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   07-JUL-2009, sequence version 1.
DT   03-AUG-2022, entry version 62.
DE   RecName: Full=Serine hydroxymethyltransferase {ECO:0000255|HAMAP-Rule:MF_00051};
DE            Short=SHMT {ECO:0000255|HAMAP-Rule:MF_00051};
DE            Short=Serine methylase {ECO:0000255|HAMAP-Rule:MF_00051};
DE            EC=2.1.2.- {ECO:0000255|HAMAP-Rule:MF_00051};
GN   Name=glyA {ECO:0000255|HAMAP-Rule:MF_00051}; OrderedLocusNames=M164_1580;
OS   Sulfolobus islandicus (strain M.16.4 / Kamchatka #3).
OC   Archaea; Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae;
OC   Sulfolobus.
OX   NCBI_TaxID=426118;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=M.16.4 / Kamchatka #3;
RX   PubMed=19435847; DOI=10.1073/pnas.0808945106;
RA   Reno M.L., Held N.L., Fields C.J., Burke P.V., Whitaker R.J.;
RT   "Biogeography of the Sulfolobus islandicus pan-genome.";
RL   Proc. Natl. Acad. Sci. U.S.A. 106:8605-8610(2009).
CC   -!- FUNCTION: Catalyzes the reversible interconversion of serine and
CC       glycine with a modified folate serving as the one-carbon carrier. Also
CC       exhibits a pteridine-independent aldolase activity toward beta-
CC       hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol
CC       mechanism. {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00051};
CC   -!- PATHWAY: Amino-acid biosynthesis; glycine biosynthesis; glycine from L-
CC       serine: step 1/1. {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00051}.
CC   -!- SIMILARITY: Belongs to the SHMT family. {ECO:0000255|HAMAP-
CC       Rule:MF_00051}.
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DR   EMBL; CP001402; ACR42181.1; -; Genomic_DNA.
DR   RefSeq; WP_012735969.1; NC_012726.1.
DR   AlphaFoldDB; C4KHW7; -.
DR   SMR; C4KHW7; -.
DR   EnsemblBacteria; ACR42181; ACR42181; M164_1580.
DR   GeneID; 7940935; -.
DR   KEGG; sid:M164_1580; -.
DR   HOGENOM; CLU_022477_2_1_2; -.
DR   OMA; SHPAGLI; -.
DR   UniPathway; UPA00288; UER01023.
DR   Proteomes; UP000001479; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004372; F:glycine hydroxymethyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0019264; P:glycine biosynthetic process from serine; IEA:UniProtKB-UniRule.
DR   GO; GO:0035999; P:tetrahydrofolate interconversion; IEA:InterPro.
DR   CDD; cd00378; SHMT; 1.
DR   Gene3D; 3.40.640.10; -; 1.
DR   Gene3D; 3.90.1150.10; -; 1.
DR   HAMAP; MF_00051; SHMT; 1.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR   InterPro; IPR001085; Ser_HO-MeTrfase.
DR   InterPro; IPR019798; Ser_HO-MeTrfase_PLP_BS.
DR   InterPro; IPR039429; SHMT-like_dom.
DR   PANTHER; PTHR11680; PTHR11680; 1.
DR   Pfam; PF00464; SHMT; 1.
DR   PIRSF; PIRSF000412; SHMT; 1.
DR   SUPFAM; SSF53383; SSF53383; 1.
DR   PROSITE; PS00096; SHMT; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; One-carbon metabolism;
KW   Pyridoxal phosphate; Transferase.
FT   CHAIN           1..433
FT                   /note="Serine hydroxymethyltransferase"
FT                   /id="PRO_1000202272"
FT   BINDING         121..123
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   BINDING         243
FT                   /ligand="(6S)-5,6,7,8-tetrahydrofolate"
FT                   /ligand_id="ChEBI:CHEBI:57453"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   SITE            226
FT                   /note="Plays an important role in substrate specificity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
FT   MOD_RES         227
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00051"
SQ   SEQUENCE   433 AA;  48456 MW;  300559548332F544 CRC64;
     MSFPKELEKV LEITKAQNVW RRTQTLNLIA SENVMSPLAE SVYMSDFMSR YAEGKPYKRY
     YQGTKYTDEI ETLAMDLMNE ITNSKDCDLR PTSGTIANAA VFRVLAEPGD KALIAPVQAG
     AHVSHTKFGT LGALGIQHIE MPFDEQNINV DVDKAIKMIE EVKPKFVVLG GSLYLFPHPT
     KELAPHVHAV GAKLVYDAAH VYGLIEGKVW SSPLKEGADI MTVSTHKTFP GPQGGAIFSD
     GSEVFKQVSR TIFPWFVSNH HLHRLPATAV TAIEMKYFGE SYANQITRNS KALAEALAER
     GFKVIGENLG YTKSHQVAVD VRQFGGGNKI AKLLEDANII VNKNLLPYDK PENVSDPSGL
     RIGVQEMTRY GMKESEMEEI AELFKKVIID KKDVNKVKKE VIDMRKNFLE VKYTFDDMKD
     LEKYSSKSLK LII